1 /* Copyright 2005 Princeton University
3 Redistribution and use in source and binary forms, with or without
4 modification, are permitted provided that the following conditions
7 * Redistributions of source code must retain the above copyright
8 notice, this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above
11 copyright notice, this list of conditions and the following
12 disclaimer in the documentation and/or other materials provided
13 with the distribution.
15 * Neither the name of the copyright holder nor the names of its
16 contributors may be used to endorse or promote products derived
17 from this software without specific prior written permission.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PRINCETON
23 UNIVERSITY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
26 OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
29 WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
41 #include "pathconfig.h"
42 #include "planetlab.h"
45 #include "vserver-internal.h"
51 vserver_chcontext(PyObject *self, PyObject *args)
55 uint32_t bcaps = ~vc_get_insecurebcaps();
56 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, 4 };
58 if (!PyArg_ParseTuple(args, "I|K", &ctx, &flags))
61 if (pl_chcontext(ctx, flags, bcaps, &rspec))
62 PyErr_SetFromErrno(PyExc_OSError);
68 vserver_set_rlimit(PyObject *self, PyObject *args) {
69 struct vc_rlimit limits;
74 limits.min = VC_LIM_KEEP;
75 limits.soft = VC_LIM_KEEP;
76 limits.hard = VC_LIM_KEEP;
78 if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
82 if (vc_set_rlimit(xid, resource, &limits))
83 ret = PyErr_SetFromErrno(PyExc_OSError);
84 else if (vc_get_rlimit(xid, resource, &limits)==-1)
85 ret = PyErr_SetFromErrno(PyExc_OSError);
87 ret = Py_BuildValue("L",limits.hard);
93 vserver_get_rlimit(PyObject *self, PyObject *args) {
94 struct vc_rlimit limits;
99 limits.min = VC_LIM_KEEP;
100 limits.soft = VC_LIM_KEEP;
101 limits.hard = VC_LIM_KEEP;
103 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
107 if (vc_get_rlimit(xid, resource, &limits)==-1)
108 ret = PyErr_SetFromErrno(PyExc_OSError);
110 ret = Py_BuildValue("L",limits.hard);
120 vserver_setsched(PyObject *self, PyObject *args)
123 struct vc_set_sched sched;
124 struct vc_ctx_flags flags;
125 unsigned cpuguaranteed = 0;
127 sched.set_mask = (VC_VXSM_FILL_RATE |
132 if (!PyArg_ParseTuple(args, "I|I|I|I|I|I|I", &xid,
141 flags.flagword = VC_VXF_SCHED_HARD;
142 flags.mask |= VC_VXF_SCHED_HARD;
143 #define VC_VXF_SCHED_SHARE 0x00000800ull
144 if (cpuguaranteed==0) {
145 flags.flagword |= VC_VXF_SCHED_SHARE;
146 flags.mask |= VC_VXF_SCHED_SHARE;
149 if (vc_set_cflags(xid, &flags) == -1)
150 return PyErr_SetFromErrno(PyExc_OSError);
152 if (vc_set_sched(xid, &sched) == -1)
153 return PyErr_SetFromErrno(PyExc_OSError);
164 vserver_get_dlimit(PyObject *self, PyObject *args)
169 struct vcmd_ctx_dlimit_v0 data;
172 if (!PyArg_ParseTuple(args, "si", &path,&xid))
175 memset(&data, 0, sizeof(data));
178 r = vserver(VCMD_get_dlimit, xid, &data);
180 res = Py_BuildValue("(i,i,i,i,i)",
187 res = PyErr_SetFromErrno(PyExc_OSError);
195 vserver_set_dlimit(PyObject *self, PyObject *args)
199 struct vcmd_ctx_dlimit_base_v0 init;
200 struct vcmd_ctx_dlimit_v0 data;
202 memset(&data,0,sizeof(data));
203 if (!PyArg_ParseTuple(args, "siiiiii", &path,
215 memset(&init, 0, sizeof(init));
219 if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
220 vserver(VCMD_set_dlimit, xid, &data))
221 return PyErr_SetFromErrno(PyExc_OSError);
226 static PyMethodDef methods[] = {
227 { "chcontext", vserver_chcontext, METH_VARARGS,
228 "chcontext to vserver with provided flags" },
230 { "setsched", vserver_setsched, METH_VARARGS,
231 "Change vserver scheduling attributes for given vserver context" },
233 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
234 "Set disk limits for given vserver context" },
235 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
236 "Get disk limits for given vserver context" },
237 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
238 "Set resource limits for given resource of a vserver context" },
239 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
240 "Get resource limits for given resource of a vserver context" },
241 { NULL, NULL, 0, NULL }
245 initvserverimpl(void)
249 mod = Py_InitModule("vserverimpl", methods);
251 /* export the set of 'safe' capabilities */
252 PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
254 /* export the default vserver directory */
255 PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
257 /* export limit-related constants */
258 PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)CDLIM_KEEP);
259 PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY);